Title:
TRANSPARENT MATERIAL
Document Type and Number:
Japanese Patent JP2015216005
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide ultra-fine rod-like transparent material enabling a generated dark line to be disappeared for attaining a direct lighting by making at least a part of longitudinal section of the transparent material into an arcuate shape or narrowing a spacing of a plurality of pattern grooves (recesses) formed at a reflection surface of the transparent material in order to extend an irradiation distance of light outgoing from a light-emitting face of the transparent material.SOLUTION: This invention relates to transparent material 3 for guiding light 12 incident from a longitudinal end incident face. One of the side surfaces of the transparent material 3 is formed with a planar reflection surface 3b and the other side surface opposing against a reflection surface 3b is formed with a light-emitting surface 3a of arcuate section. A plurality of recesses 3e are arranged and spaced apart along a longitudinal direction at a central region spaced apart from the side end part in a width direction of the reflection surface 3b, and at the same time, forming positions in width direction of the adjoining recesses 3e are set to be staggered.
Inventors:
KOJIMA KANEHARU
SATO AKIHIKO
KOYAMA JUN
SATO AKIHIKO
KOYAMA JUN
Application Number:
JP2014097781A
Publication Date:
December 03, 2015
Filing Date:
May 09, 2014
Export Citation:
Assignee:
HAYASHI TELEMPU KK
International Classes:
F21S2/00; B60Q3/02
Domestic Patent References:
| JP2008209633A | 2008-09-11 | |||
| JP2008032759A | 2008-02-14 | |||
| JP2005528747A | 2005-09-22 |
Attorney, Agent or Firm:
Shuji Sugimoto
Masashi Noda
Kenro Tsutsumi
Yuka Kobayashi
Daisuke Kaneko
Akio Otomo
Masashi Noda
Kenro Tsutsumi
Yuka Kobayashi
Daisuke Kaneko
Akio Otomo
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